Home / 128,200.35-192,300.67-33,430.45

Finding the Fourth Proportional to 128,200.35, 192,300.67 and 33,430.45

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Solution

The fourth proportional to 128,200.35, 192,300.67 and 33,430.45 is: 50,145.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,200.35 : 192,300.67 = 33,430.45 : x
  2. Step 2: Convert to fraction form
    128,200.35/192,300.67 = 33,430.45/x
  3. Step 3: Cross multiply
    128,200.35x = 192,300.67 × 33,430.45
  4. Step 4: Simplify right side
    128,200.35x = 6,428,696,804.75
  5. Step 5: Solve for x
    x = 6,428,696,804.75/128,200.35
  6. Step 6: Final answer
    x = 50,145.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.